26265474409 has 2 divisors, whose sum is σ = 26265474410. Its totient is φ = 26265474408.

The previous prime is 26265474401. The next prime is 26265474421. The reversal of 26265474409 is 90447456262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20042631184 + 6222843225 = 141572^2 + 78885^2 .

It is a cyclic number.

It is not a de Polignac number, because 26265474409 - 2³ = 26265474401 is a prime.

It is not a weakly prime, because it can be changed into another prime (26265474401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13132737204 + 13132737205.

It is an arithmetic number, because the mean of its divisors is an integer number (13132737205).

Almost surely, 2^26265474409 is an apocalyptic number.

It is an amenable number.

26265474409 is a deficient number, since it is larger than the sum of its proper divisors (1).

26265474409 is an equidigital number, since it uses as much as digits as its factorization.

26265474409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 49.

The spelling of 26265474409 in words is "twenty-six billion, two hundred sixty-five million, four hundred seventy-four thousand, four hundred nine".